Symbol: othercase
lib/libc/regex/regcomp.c
134
static wint_t othercase(wint_t ch);
lib/libc/regex/regcomp.c
1388
assert(othercase(ch) != ch); /* p_bracket() would recurse */
lib/libc/regex/regcomp.c
1411
if ((p->g->cflags&REG_ICASE) && iswalpha(ch) && othercase(ch) != ch)